 import * as types from './mutation-types'
 import {playMode} from 'common/js/config'
 import {shuffle} from 'common/js/util'

 function findIndex(list,song) {
   return list.findIndex((item)=>{
     return item.id===song.id
   })
 }
 export const selectPlay = function ({commit, state}, {list, index}) {
   commit(types.SET_SEQUENCE_LIST, list)
   if(state.mode===playMode.random){
     let randomList=shuffle(list)
     commit(types.SET_PLAYLIST,randomList)
     index=findIndex(randomList,list[index])
   }else{
     commit(types.SET_PLAYLIST,list)
   }
   commit(types.SET_CURRENT_INDEX, index)
   commit(types.SET_FULL_SCREEN, true)
   commit(types.SET_PLAYING_STATE, true)
 }

 export const randomPlay=function ({commit},{list}) {
   commit(types.SET_PLAY_MODE,playMode.random)
   commit(types.SET_SEQUENCE_LIST,list)
   let randomList=shuffle(list)
   commit(types.SET_PLAYLIST,randomList)
   commit(types.SET_CURRENT_INDEX, 0)
   commit(types.SET_FULL_SCREEN, true)
   commit(types.SET_PLAYING_STATE, true)
 }
